scripts: check for, and warn about an unset CT_PREFIX_DIR
The user shall provide a directory to install the toolchain into.
If he/she does not, this is an error, and shall be detected properly,
rather than relying on failure down the road.
Thanks to "Pedro I. Sanchez" <psanchez@colcan.ca> for pointing out
the issue:
http://sourceware.org/ml/crossgcc/2009-12/msg00011.html
1 diff -dur ELFkickers.orig/sstrip/Makefile ELFkickers/sstrip/Makefile
2 --- ELFkickers.orig/sstrip/Makefile 2001-03-24 12:58:27.000000000 +0100
3 +++ ELFkickers/sstrip/Makefile 2007-05-31 21:17:18.000000000 +0200
8 - gcc -ggdb -Wall -W -o sstrip sstrip.c
9 + $(CC) -Wall -W -o sstrip sstrip.c